Bobbin-winding machine



Feb. 23 ,1926.

G.JUER

BOBBIN WINDING MACHINE Filed April 28, 1925 9 Sheets-Sheet l l YI Il??? I:

Feb. 23', '1926. 1,573,837

G. JUER BOBBIN WINDING MACHINE Filed April 28, 1925 9 Sheets-Sheet 2 Feb. 23 ,11926. l 1,573,837

G. JUER BOBBIN WINDING MACHINE Filed April 28, 1925 9 sheets-sheet s fsJf Feb. 23 1926.

1,573,837 G. JUER BOBBIN WI NDING MACHINE Filed April 28, 1925 9 Shee'cs-Sheei'l 4 \\\\\\\\\\llll Feb. 23 1926.

G. JUER BOBBIN WINDING MACHINE Filed April 28. 1925 9 Sheets-Sheet 5 Feb. 23 1926.

G. JUER BoBIN wINDING MACHINE Filed April 28, 1925 Lig Feb. 23 ,'1926. 1,573,837

' G. JUER BOBBIN WINDING MACHINE Filed April 28, 1925 9 Sheets-Sheet 7 Feb. 23 1926.

G. JUER BOBBIN WINDING MACHINE Filed April 28, 1925 9 Sheets-Sheet 8 Feb. 23,1926. 1,573,831'

G. JUER BOBBIN WINDING MACHINE Filed April 28. 19.25 asheets-sneet 9 Patented Feb. 23, 1926.

UNITED STATES PATENT OFFICE.

GEORGE JUE, 0F HCIEWELL, VIRGINIA, ASSIGNOR T0 TUBIZE ARTIFICIAL SILK COMPANY 0F AMERICA, A CORPORATION OF DELAWARE.

BOBBINWINDING MACHINE.

Application led April 28, 1925. Serial No. 26,346.

have invented certain new and useful Improvements in Bobbin-Winding Machines, I,of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof. y

My invention relates, generally (speaking, to bobbin winding mechanism and especially to, such mechanism used in com. bnation with mechanism for exuding filaments of artificial silk which are wound on a bobbin as they come from the spinning mechanism. In such machines, as the filament is plastic as it leaves the orifice through which it is exuded, it is import-ant that a constant tension should be maintained on the ilament until it has set as otherwise it vwill increase or diminish in diameter and one object of my invention is to insure that the bobbin shall exert a constant pull on the filaments as they are Wound upon 1t. Another object of my invention is to so feed the filaments or yarn to the bobbins that they will be wound thereon in compact spirally laid layers of progressively less len th so that each layer forms a compact cylindrical surface on which. the succeeding layer is wound and the danger of the outer 'coils slipping over the edges of the lower coils is avoided and, as a result of this mode of winding I am enabled to wind considerably more yarn on a bobbin.

The main feature of my invention liesI in my employment as a means of actuating a reciprocating yarn carrier by means of which the yarn 1s delivered to the bobbin, to which a constant peripheral speed is imparted, of a'drum cam of variable throw and of a pro essively changing :form by shifting whic cam the desired shifting movements are imparted to the yarn carrier.

My invention 1n its detail will be best understood as described in connection with the drawings Awhich illustrate a machine provided with my improvements and in which Figure l is a plan view of my machine.

Figure 2, a side elevation of a portion of the mechanism shown in Fig. 1.

Figure 3 is a plan view on a larger scale of a portion of the mechanism shown in Fig. l.

Figure 4 is a plan on line 4 4 of Fig. 6

Figure 5 is an end elevation.

Figure 6, a side elevation of the mechanism shown in Fig. 3.

Figure 7 is a sectional elevation of the cam actuating and adjusting mechanism taken as on line 7-7 of Fig. 3.

Figure 8 is a sectional view on line 7-7 of Fig. 3, of a detail.

Figure 9 shows the outline of a drum cam at its top.

Figure 10 shows the outline of the drum cam at its bottom.

Figure 11 is a plan view of the drum cam.

Figure 12, a side elevation.

Figure 13, a section on the line 13--13 of' Fig. 11, and

Figure 14, a section on the line 14-14 of Fig. 11.

A is a pipe through which collodion is forced under pressure into a header diagrammatically indicated at A from which it issues as plastic filaments through fine orifices indicated at a. B is the frame of the machine. C, a guide bar having guide orifices c. D is a slotted guide having slots ci in which groups of filaments are gathered into yarns. E is a reciprocating bar to which yarn guides e are secured. E2 is a bar to which bar E is attached. F, F, are pairs of supporting rolls on which the bobbins G are supported and which are se' cured to shafts F having bearings in the frame of the machine. H are the filaments of artificial silk, groups of which, as H', Fig. 2, are drawn together into a yarn H2 which is guided by guide e onto the bobbin G, the wound yarn being indica-ted at H3, H4.

Referring now to the mechanism for driving the bobbin supporting rolls and actuating the yarn guides, .l is a shaft having fast and loose pulleys J and J2 and having also secured to it the miter wheels J3 and J3 which drive the parallel shafts K, K, through the miter wheels K. To these shafts K are secured the gear wheels K2 which in turn engage and drive the gears K3`and K4 secured one to each of the shafts F of a pair of bobbin supporting rolls F, F. Also secured to the shaft J is the Winder J4 which engages and drives a worm wheel L vsecured at the top of the shaft L, to the lower end of which shaft is secured the gear wheel L2 and a crank pin indica-ted at L?, see Fig. 6. The gear L2 engages and drives the gear M secured to the lower end of a shaft M, to which shaft is secured a key, as shown at M2 in Fig. 7

N is a lever pivoted on an extension of the shaft M and formed with a slot indicated at N in which drops the crank pin L5. N5 is a connection through the end of the lever N to a pawl supporting lever N4, pivoted on a shaft O and having a pawl N6 supported on its arm N5. This pawl works upon a ratchet wheel O secured to the shaft O, to which shaft is also secured a worm O2, see Figs. 5 and 6, engaged with a worm wheel P secured to the lower end of a shaft P on which is formed a screw thread as indicated at P2. The screw shaft P has a bearing in the frame section Q which is formed with a projecting ledge Q and the screw shaft passes upward through a sleeve bearing Q2 formed with a longitudinal slot, as indicated Q5. R is a drum cam of variable throw which is keyed to the shaft M but vfree to slide longitudinally on the shaft and supported on an extension R3 formed at its upper end with a peripheral groove R4 and supported by a slide member S into a chamber S into which the end of the member R3 extends and in which chamber it is secured, as shown, by a pin S2. A cylindrical passage S5 of the slide fits on the tubular guide Q2 and is formed with an opening S4,

. through which extends the retractable trigger S10, the end of which is shaped to form an end section engaging the screw on the shaft P. From the slide extend the arms indicated at S5 supporting a pivot pin S8 and formed with stop shoulders indicated at S2. S2 is a lever pivotedon the pin S6 and carrying a pivot pin S2 to which the trigger S12 is attached, the lever having also an arm S11 which, by means of the spring S12, is drawn so as to turn the lever in the direct-ion to press the trigger against the screw shaft. S13 is another pivot pin carried by the lever S. S12, a stop pin also carried by this lever and S15 is a rack secured on the pin S13 having at its lower end an angularly extending shoulder S16 extending below the ledge Q and in which is adjustably secured an abutting screw indicated at S12. S18 is a segmental gear engaged with the rack S15 and supported by a shaft S22. Attached to this shaft is the handle lever S11 carrying a handle S21 and a counterbalancing weight indicated at S20.

The conformation of the drum cam R will vary with the length of the bobbins to be wound and, to some extent, with other variations in the machine. The cam shown in detail in Figures 9 to 14, is, however, typical in its general conformation. top, indicated at R', the cam has its greatest throw. At the bottom, indicated at R2, its

lowest throw. Between the top and bottom of the cam it is so shaped as to gradually diminish the linear speed of motion given to the yarn carrier in approximate proportion'to the increasing diameter of the wound bobbin so that the coils of yarn will, through all parts of the winding operation, be spaced upon the bobbin atapproximately the same distance from the adjacent coils. Again, the conformation given to the sides of the cam indicated at R5 should, for the best results, be such that the linear speed of travel imparted to the yarn carrier will be progressively greater as the arn carrier moves from a position in whic 1 it is delivering yarn to the center of the bobbin towards the ends of the bobbin, this being desirable so as to maintain an approximately constant tension on the yarn and on the lilaments of which the yarn is composed.

T, T, are parallel slide bars moving in bearings on the frame of the machine and situated on each side of the cam R. These slide bars are connect-ed by a cross bar T from which extend arms t supporting in bearings t trunnions t2 extending out from a frame t5 on which, by means of a pivot t1, is secured the cam contacting roller T5. On the other side of the cam R a cross bar T2 is slidingly supported on the slides T, T, and pressed toward the cam by means of the spring T4. A' cam contacting roller is supported on the cross bar T2 in the same manner as is the roll and cross bar T and as best shown in Fig. 8.

T5 is a rack bar secured to the cross bar T and engaged by a gear wheel Te secured at the center to a shaft T", to the ends of which are secured gear wheels T2, T2, engaging rack bars T9, T9, which are attached to a bar T10, to the ends of which bar are secured the sliding supports indicated at T11, T11, which slidingly support the bars E2, E2, formed with slot extensions indicated at E3. T13 are bearings for shafts to one end of which shafts are secured handle levers T14 and to the other end the levers T15, carrying pins T16 which enga e in the slots E2.

In operation the obbin rolls F are rotated through the desired gears from the driving shaft J and the bobbins G are 'rotated by the drums F at constant periph- At the eral speed. At thebegimiing of a bobbin winding operation, the cam R is set in its lowest position so that its upper portion which is that having the greatest throw, is in contact with the cam rolls. By means of the worm J 1 and the worm wheel L the shaft L is rotated and through the gear wheels J2 and M the shaft M is rotated which in turn through the key M2 effects the rotation of the cam R. This cam acting on the cam rolls T0 gives a reciprocating movement to the slide bars T and to the connected rack T5 which, through the gears T0 an T8, reciprocates the rack bars T0 at 'an increased speed and to an increased distance and by means of these rack bars the cross bar T10 and its adjustments are reciprocated, the

bars E2 being attached to the bars E, giving a reciprocatlng movement to the' yarn carrier e so that the yarn `is fed to the bobbins G.

When it is desired to transfer the feed from a filled to an empty bobbin this can readily be ei'ected without stopping the machine by turning the handles T11 and, through the levers T15 and their connected pins T10, shifting the bars E2 and, of course, the bars E connected with them, to a posii tion to bring the yarn carrier e into registry with another bobbin. As the shaft L rotates,

`the eccentric -pin L3 at its lower end imparts a reciprocating movement to the lever N which is fitted on the lower end of the shaft- M and which in turn reciprocates the pawl lever N4, N5 so that the pawl N0 imparts an intermittent rotating movement to the shaft O through its rotating wheel O. Through the worm O2 and the worm wheel P', an intermittent rotative movement is imparted to the screw shaft Pand the screw being engaged in the trigger S10 the eect is to progressively shift the slide S and the cam supported upon it u ward so that sections of the drum cam o progressively less throw act upon the slide at each successive rotation of the drum cam, thus diminishing the length of the path of the yarn carrier so that each layer of yarn delivered to the bobbin is wound on a shorter surface.

Atthe lend ofthe upward movement ofthe drum cam, I provide means for automatically disconnecting the trigger S10 with the screw P2. Thus, as shown in Fig. 7, the set screw S17 comes in contact with the projection Q after which the upward motion of the rack S15 is arrested and as the slide S moves upward the lever S2 is turned on its pivot S0, withdrawing the trigger S10 from contact with the screw and arresting further upward movement of the cam.

To return the cam to position to begin the winding of the new bobbin the shaft S22 :is rotated as by means of the crank S21 so that the segment S10 will draw down on the rack S10, retracting the trigger S10 if it has not been automatically disconnected from the screw as already described, and then drawing down slide S and the cam carried by it to the lowermost position, after reaching which the trigger is again permit ted to move in under the action of its spring S12 so as to engage the screw; the counterbalance indicated at S20, together with the frictional resistance of the slide is such as to practically balance the weight of the slide S and the cam supported upon it.

Itwill be understood that while my invention is partly directed to the winding of artificial silk as its' filaments are exuded from spinnarettes and has especial value for this mode of use in that it provides winding mechanism which will maintain an approximately constant tension on the ila ments and also in that it provides for'the yarn carrier through progressively shorter Y distances as the yarn is wound consisting of a drum cam of variable throw, a cam 'contacting slide connected to actuate the yarn carrier, means for rotating the cam and means for progressively shifting the cam with relation to the contacting slide to shorten the throw of the slide as the bobbin is wound.

2. In a machine having the features of claim 1, the combination' therewith of means interposed between the cam contacting slide and the yarn carrier whereby a longer throw is given'to the yarn carrier than that of the cam actuated slide.

3. In a machine having the features of claim 1, the combination therewith of means interposed between the cam contacting slide and the yarn carrier whereby the yarn carrier can be shifted to reciprocate through a different path,

4. In a machine having the features of claim 1, the use in said combination of bobbin rotating means imparting a. constant peripheral speed to the winding surface so that the yarn passes to the bobbin at a uniform speed.

5. In a machine having the features of claim 1, the use in said combination of bobbin rotating-means consisting of a air of friction rollers upon which the bobblns rest peripheral speed.

6. In a machine having the features of claim 1, the employment of means for rotating and shifting the drum cam consisting of a rotating shaft to which the cam is keyed with freedom to slide longitudinally, a parallel threaded shaft, means for rotating the threaded shaft in a fixed relation to the rotation of the cam supporting shaft, a cam supporting slide, a retractable trigger normally engaging the threaded shaft and moving with the slide and means for disengaging the trigger and shifting the slide and cam.

7. In a Amachine having the features of claim 1, the use of a variable throw Idrum cam progressively conformed .to lessen the linear speed of travel of the yarn carrier as the path of travel shortens and the angular speed of rotation of the bobbin diminishes.

8. In a machine having the features of claim 1, means for operatively connecting the cam contacting slide with the yarn carrier comprising a rack moving with the slide, a gear-wheel engaging said rack, a shaft to which said gear Wheel is secured, a gear wheel of larger dia-meter secured to said shaft, a rack engaged by-said larger gear wheel and means connecting said rack to the yarn carrier.

` 9. In a machine having-the features of claim 1, the employment of cam shifting means acting intermittently at the end of each revolution of the cam.

10. In a machine having the features of claim 1, the employment of means for rotating and shifting the drum cam consisting of a rotating shaft to which the cam is keyed with freedom to slide longitudinally, a parallel threaded shaft, means for rotating the threaded shaft in a fixed relation to the rotation of the cam supporting shaft, a cam supporting slide, a retractable trigger normally engaging the threaded shaft and moving with the slide, a trigger actuating lever pivoted on the slide, a spring acting on said 5 lever to press the trigger into contact with the screw shaft, a rack connected to the lever, a gear segment engaged with the rack whereby the trigger can be withdrawn and the slide shifted and means for actuating said gear segment.

11. In combination with means for exuding filaments of artificial silk a bobbin to receive a yarn made up of a group of such filaments, means for imparting to the winding surface of said bobbin a constant peripheral speed, a yarn carrier for delivering the yarn to the bohbin, a cam contacting slide connected to reciprocate the -yarn carrier, a drum cam of Variable throw for actuating said slide through progressively shorter paths of travel, and means for progressively shifting the cam.

12. A machine having the features of claim 11, in which the drum cam is progressively conformed to decrease the linear speed of travel of the yarn carrier as its length of travel diminishes and as the winding surface of the bohbin increases in diameter.

13. A machinehaving the features fo'f claim 11, in which the drum cam is progressively conformed to decrease the linear speed of travel of the yarn carrier as its length of travel diminishes and as the winding` surface of the bobbin increases in diameter and conformed also to progressively increase the linear speed of travel of the yarn carrier at points on either side of its position when delivering yarn to the center of the bobbin.

GEORGE JUER. 

